Closure



16 1946- R NYDEN I l2,398,553.

Filed May 9, 1942A INVENTK.

Patented Apr. 16, 1946 CLOSURE Robert Nyden, Manhasset, N. Y., assignor to F. N.

Burt Company, Inc., Buialo, N. Y., a corporation of Delaware Application May 9, 1942, serial1\m..44.2,299`

(c1. 21e-43) 'e 1 Claim.

This invention relates to a new and improved closure of the "screw-cap type.

It is an object of the invention to provide a cap of this character that may be economically and rapidly fabricated from materials readily subject to die cutting and die scoring. Due to current restrictions in the use of metal, it is a major object to provide such cap readily adapted to manufacture from paper, cardboard, chipboard, plastics and similar materials, and which will lend itself to ready fabrication in large vol- Another object is that of providing a cap of this kind constructed in an improved manner whereby it is suiiciently durable and Wearre and this is a preferred manner of forming it, it will be understood that the structure of this cuplike member may be varied.

Cooperating with this outer flanged or cuplike member I6 in the formation of a completed closure is an inner body I8 which may be slight- 1y domed as shown in Fig. 2 both to conform substantially with the doming of the outer body sistant to withstand normal wear over a considerable period of time and which will not discolor or contaminate the container or contents with Which it is utilized.

Another object is that of providing a closure of this kind with an improved sealing structure adapted for use with creams, paste, liquids and other substances that require a substantially air-tight seal between the container and the closure.

With these and other objects in mind, reference is had to the attached drawing, in which:

Fig. 1 is a plan view of the inner member of one embodiment of the improved closure in` partially formed conditions;

Fig. 2 is a cross section taken through a container with a finished closure embodying the inner member of Fig. 1 in place thereon;

Fig. 3 is a perspective view of the outer mem ber of the closure shown in Fig. 2;

Fig. 4 is a perspective view of the inner closure member shown in Fig. 1 in its completed condition and before assembly with the outer closure member shown in Fig. 3;

Fig. 5 is a container showing a threaded neck .portion adapted to receive the improved closure;

Fig. 6 is a plan view similar to Fig. 1 showing a modified type of inner closure member; and

Fig. '7 is a cross section of a completed closure embodying the inner closure member shown in Fig. 6.

As shown in Figs. 1 to 5 of the drawing, the improved closure member comprises an outer cover or body portion I6 having a depending `peripheral flange I1 shown as being integrally formed with the top of the outer body member and forming a cup-like unit. Although the depending flange I'I is shown as being formed integrally with the top of the outer cover member I6 and to provide a, tensioning means. As shown in Fig. 1, Ythe inner body I8 may be die cut or stamped from a flat sheet of paper, breboard, cardboard or the like, and have embossed in it at the time of stamping operation, an annular depressed sealing ring I9. Tabs 20 extend outwardly from the periphery of the inner disc like body I8 and have embossed in them segments of screw threads as at 2|. Thereafter, the inner disk-like memberv I8 shown in Fig. 1 is placed in a forming machine and the tabs 2D are turned downwardly so that the member takes the form shown in Fig. 4. It is then inserted within the outer cup-like member I6 shown in Fig. 3 and the down-turned hanged portions 20 due to the resiliency, frictionally engage the inner surfaces of the annular flange I'I of the member I6. The outer member with its integral depending flange I1 thus forms a support for the inner body or disc-like member I8 and said flange Il serves as a back support to prevent undue displacement of the peripherally arranged depending flanges 20 during application of the closure in closing relation on the container.

If desired, a, suitable adhesive can be utilized to hold the inner member I8 in position within the outer member I6. v

While I have indicated that a separate forming machine is used to turn the tabs downwardly, it is quite apparent that a single machine might be used for the complete operation. As indicated in Fig. 2, it will be noted that when the screw cap or closure is put in position on the container, the 'annular sealing ridge I9 engages the upper surface 25 of the open mouth of the container.

The container body 2'2 may be formed of any suitable material such as glass, porcelain, paper or plastics and may be of any desired conguration. The container is preferably provided with a shoulder 23 from which rises a neck or mouth portion 24. Raised on this neck or mouth portion are suitable screw threads, for example, as shown at 26. The embossed thread segments 2l in the closure tabs 20 follow the same pitch as the thread 26 of the container neck, so that when the cap is screwed in position on the container, the threads co-act.

Turning now to Figs. 6 and '7, there is illustrated an inner disk-like closure body 21 hav- 'ing depending annular flange or tab portions 28 in which a thread 29 is embossed. It will be noted that in this embodimentV the tab portions or flange sections 28 are adjacent to each other and close together at the lineoff attachment or of other parts of the closure i. e. paper, cardboard, plastics etc., is preferably inserted between the depending flanges or side walls of the inner member and the outer member. Among other advantages, this spacer furnishes a resilient cushion thereby providing a tight compressive seal as Well as furnishing a compensating means for diameter variation or tolerance. In this embodiment as in that previously described the` outer flange 39 of the outer cup-like member 3| forms a back support against which the cushioningand sealing ring 32 is compressed by outward movement of the iianges 28 during application of the closure to the container. Thus the .sealing ring 32 due to itsresilient compressibility and cushioning effect serves as a'compensating means for slight diameter variations of the container neck and closure member. While a press t engagement of the parts will hold them in assembled position, adhesive again' may be utilized if dek sired.

As pointed out above, each of the different embodiments of the improved closure is well adapted for fabrication from non-metallic materials. As indicated, the preferred materials are paper, cardboard, berboard, any of the well known plastics, and the like.

Since certain changes may be made in the above construction and different embodiments of the invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

I claim:

A closure for Containers including, in combination, a cup-like outer member having a peripheral depending outer flange, a disc-like inner member havingy integral therewith a series of peripherally arranged separate depending flange members positioned to receive parts of the container, screw thread segments on said depending lia-nge members for engagement with the container, said depending ange members being received Within -said depending flange of said outer member and being free to swing outwardly toward said outer liange which serves as a back support fer said depending flange members to limit outward swinging movement thereof, said depending flange members being resilient and resiliently urged to swing outwardly toward said outer ange into frictional retaining relation therewith for rictionally retaining the inner and outer members in assembled relation, and a sealing member of compressive cushioning material interposed between said depending outer flange and said depending inner flange members and cooperating therewith so as to be compressed against said outer flange by outward movements of said inner depending flange members caused by application of the closure to the container and to serve as a compensating cushion for slight diameter variations of the engaging parts ofthe closure and container.

ROBERT NYDEN. 

